[INFO] cloning repository https://github.com/CheatCod/learning-session
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CheatCod/learning-session" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCheatCod%2Flearning-session", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCheatCod%2Flearning-session'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6785650df03fc07d39fae2d2577d995ba34633fb
[INFO] testing CheatCod/learning-session/6785650df03fc07d39fae2d2577d995ba34633fb against try#b8e88e5ddf5521a9f43ee3f62a702388c713e4bb for pr-155114
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCheatCod%2Flearning-session" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/CheatCod/learning-session
[INFO] finished tweaking git repo https://github.com/CheatCod/learning-session
[INFO] tweaked toml for git repo https://github.com/CheatCod/learning-session written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/CheatCod/learning-session on toolchain b8e88e5ddf5521a9f43ee3f62a702388c713e4bb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b8e88e5ddf5521a9f43ee3f62a702388c713e4bb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/CheatCod/learning-session already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b8e88e5ddf5521a9f43ee3f62a702388c713e4bb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b8e88e5ddf5521a9f43ee3f62a702388c713e4bb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f2f010918b066ca0ff3fb576b909b04768a51e434fb35d4c78f35daa95bdcbfc
[INFO] running `Command { std: "docker" "start" "-a" "f2f010918b066ca0ff3fb576b909b04768a51e434fb35d4c78f35daa95bdcbfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2f010918b066ca0ff3fb576b909b04768a51e434fb35d4c78f35daa95bdcbfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2f010918b066ca0ff3fb576b909b04768a51e434fb35d4c78f35daa95bdcbfc", kill_on_drop: false }`
[INFO] [stdout] f2f010918b066ca0ff3fb576b909b04768a51e434fb35d4c78f35daa95bdcbfc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b8e88e5ddf5521a9f43ee3f62a702388c713e4bb" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4e39b42733ba60c6621cdf9cd9bdab1ac719b8830eff1fbb5d654c933fb07945
[INFO] running `Command { std: "docker" "start" "-a" "4e39b42733ba60c6621cdf9cd9bdab1ac719b8830eff1fbb5d654c933fb07945", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.161
[INFO] [stderr]    Compiling proc-macro2 v1.0.89
[INFO] [stderr]    Compiling unicode-ident v1.0.13
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling smallvec v1.13.2
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]    Compiling pin-project-lite v0.2.15
[INFO] [stderr]    Compiling bytes v1.8.0
[INFO] [stderr]    Compiling socket2 v0.5.7
[INFO] [stderr]    Compiling signal-hook-registry v1.4.2
[INFO] [stderr]    Compiling mio v1.0.2
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling parking_lot v0.12.3
[INFO] [stderr]    Compiling syn v2.0.85
[INFO] [stderr]    Compiling tokio-macros v2.4.0
[INFO] [stderr]    Compiling tokio v1.41.0
[INFO] [stderr]    Compiling learning-session v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.40s
[INFO] running `Command { std: "docker" "inspect" "4e39b42733ba60c6621cdf9cd9bdab1ac719b8830eff1fbb5d654c933fb07945", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e39b42733ba60c6621cdf9cd9bdab1ac719b8830eff1fbb5d654c933fb07945", kill_on_drop: false }`
[INFO] [stdout] 4e39b42733ba60c6621cdf9cd9bdab1ac719b8830eff1fbb5d654c933fb07945
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b8e88e5ddf5521a9f43ee3f62a702388c713e4bb" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d5e12dccf7892ebbe0252bbad4cede4d1dca0fc0850b07468b743f7789539e3a
[INFO] running `Command { std: "docker" "start" "-a" "d5e12dccf7892ebbe0252bbad4cede4d1dca0fc0850b07468b743f7789539e3a", kill_on_drop: false }`
[INFO] [stderr]    Compiling learning-session v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/intro_to_multi_threading/lesson.rs:150:13
[INFO] [stdout]     |
[INFO] [stdout] 150 |         let mut counter = Arc::new(Mutex::new(0));
[INFO] [stdout]     |             ----^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused implementer of `Future` that must be used
[INFO] [stdout]    --> src/intro_to_async/lesson.rs:121:9
[INFO] [stdout]     |
[INFO] [stdout] 121 |         async_fn(0);
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: futures do nothing unless you `.await` or poll them
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.56s
[INFO] running `Command { std: "docker" "inspect" "d5e12dccf7892ebbe0252bbad4cede4d1dca0fc0850b07468b743f7789539e3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5e12dccf7892ebbe0252bbad4cede4d1dca0fc0850b07468b743f7789539e3a", kill_on_drop: false }`
[INFO] [stdout] d5e12dccf7892ebbe0252bbad4cede4d1dca0fc0850b07468b743f7789539e3a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b8e88e5ddf5521a9f43ee3f62a702388c713e4bb" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0d4db43a3d5503cc092ecc14b8e3125d0478b1abffb215e94c8de9c9f3c7b0b0
[INFO] running `Command { std: "docker" "start" "-a" "0d4db43a3d5503cc092ecc14b8e3125d0478b1abffb215e94c8de9c9f3c7b0b0", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/intro_to_multi_threading/lesson.rs:150:13
[INFO] [stderr]     |
[INFO] [stderr] 150 |         let mut counter = Arc::new(Mutex::new(0));
[INFO] [stderr]     |             ----^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused implementer of `Future` that must be used
[INFO] [stderr]    --> src/intro_to_async/lesson.rs:121:9
[INFO] [stderr]     |
[INFO] [stderr] 121 |         async_fn(0);
[INFO] [stderr]     |         ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: futures do nothing unless you `.await` or poll them
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `learning-session` (bin "learning-session" test) generated 2 warnings (run `cargo fix --bin "learning-session" -p learning-session --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/learning_session-a3f2ab79ca6d9337)
[INFO] [stdout] 
[INFO] [stdout] running 20 tests
[INFO] [stdout] test intro_to_async::lesson::async_rust::futures ... ok
[INFO] [stdout] test intro_to_async::lesson::async_rust::quiz ... ok
[INFO] [stdout] test intro_to_async::lesson::sync_and_send_trait::composite_types ... ok
[INFO] [stdout] test intro_to_async::lesson::sync_and_send_trait::send_trait ... ok
[INFO] [stdout] test intro_to_async::lesson::sync_and_send_trait::unsafe_impl ... ok
[INFO] [stdout] test intro_to_async::lesson::sync_and_send_trait::sync_trait ... ok
[INFO] [stdout] test intro_to_multi_threading::lesson::move_semantics::main ... ok
[INFO] [stdout] test intro_to_multi_threading::lesson::sharing_data::sharing_data_5_do_not_do_this ... ok
[INFO] [stdout] test intro_to_multi_threading::lesson::sharing_data::sharing_data_attempt_1 ... ok
[INFO] [stdout] test intro_to_multi_threading::lesson::sharing_data::sharing_data_attempt_2 ... ok
[INFO] [stdout] test intro_to_multi_threading::lesson::sharing_data::sharing_data_attempt_3 ... ok
[INFO] [stdout] test intro_to_multi_threading::lesson::sharing_data::sharing_data_attempt_4 ... ok
[INFO] [stdout] test intro_to_multi_threading::lesson::sharing_data::sharing_data_with_arc_and_mutex ... ok
[INFO] [stdout] test intro_to_async::lesson::async_rust::select ... ok
[INFO] [stdout] test intro_to_multi_threading::lesson::basic_thread::main ... ok
[INFO] [stdout] test intro_to_async::lesson::async_rust::join ... ok
[INFO] [stdout] test intro_to_async::lesson::async_rust::do_not_block_the_runtime ... ok
[INFO] [stdout] test intro_to_async::lesson::async_rust::running_blocking_code has been running for over 60 seconds
[INFO] [stdout] test intro_to_async::lesson::async_rust::runtime_is_smart has been running for over 60 seconds
[INFO] [stdout] test intro_to_async::lesson::async_rust::spawning has been running for over 60 seconds
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "0d4db43a3d5503cc092ecc14b8e3125d0478b1abffb215e94c8de9c9f3c7b0b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d4db43a3d5503cc092ecc14b8e3125d0478b1abffb215e94c8de9c9f3c7b0b0", kill_on_drop: false }`
[INFO] [stdout] 0d4db43a3d5503cc092ecc14b8e3125d0478b1abffb215e94c8de9c9f3c7b0b0
